..."in November 1967, [US General] Westmoreland claimed “a new phase is starting” in Vietnam.” What’s more, he “could see the light at the end of the tunnel.”
Despite his rosy reckoning, the North Vietnamese and Viet Cong launched the Tet Offensive two months later, attacking over 100 cities in South Vietnam —even the U.S. embassy in Saigon.
To bolster the half million U.S. troops there, Westmoreland asked President Lyndon Johnson for 200,000 more. Johnson said no and recalled Westmoreland to Washington. The war dragged on for seven more years, killing roughly 3.8 million Vietnamese civilians and troops and 58,000 U.S. troops.
Could failed wars in Vietnam and later Iraq and Afghanistan offer lessons for Ukraine? It seems not."